From fb9b7b4b2b82d72031bff6d615215c1c74064bb3 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 14 Jun 2023 09:35:01 +0200 Subject: [PATCH] x86: xen: add missing prototypes These function are all called from assembler files, or from inline assembler, so there is no immediate need for a prototype in a header, but if -Wmissing-prototypes is enabled, the compiler warns about them: arch/x86/xen/efi.c:130:13: error: no previous prototype for 'xen_efi_init' [-Werror=missing-prototypes] arch/x86/platform/pvh/enlighten.c:120:13: error: no previous prototype for 'xen_prepare_pvh' [-Werror=missing-prototypes] arch/x86/xen/enlighten_pv.c:1233:34: error: no previous prototype for 'xen_start_kernel' [-Werror=missing-prototypes] arch/x86/xen/irq.c:22:14: error: no previous prototype for 'xen_force_evtchn_callback' [-Werror=missing-prototypes] arch/x86/entry/common.c:302:24: error: no previous prototype for 'xen_pv_evtchn_do_upcall' [-Werror=missing-prototypes] Declare all of them in an appropriate header file to avoid the warnings. For consistency, also move the asm_cpu_bringup_and_idle() declaration out of smp_pv.c. Signed-off-by: Arnd Bergmann Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Link: https://lore.kernel.org/r/20230614073501.10101-3-jgross@suse.com Signed-off-by: Juergen Gross --- arch/x86/xen/efi.c | 2 ++ arch/x86/xen/smp.h | 4 ++++ arch/x86/xen/smp_pv.c | 1 - arch/x86/xen/xen-ops.h | 3 +++ include/xen/xen.h | 3 +++ 5 files changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/efi.c b/arch/x86/xen/efi.c index 7d7ffb9..863d0d6 100644 --- a/arch/x86/xen/efi.c +++ b/arch/x86/xen/efi.c @@ -16,6 +16,8 @@ #include #include +#include "xen-ops.h" + static efi_char16_t vendor[100] __initdata; static efi_system_table_t efi_systab_xen __initdata = { diff --git a/arch/x86/xen/smp.h b/arch/x86/xen/smp.h index 22fb982..c20cbb1 100644 --- a/arch/x86/xen/smp.h +++ b/arch/x86/xen/smp.h @@ -2,6 +2,10 @@ #ifndef _XEN_SMP_H #ifdef CONFIG_SMP + +void asm_cpu_bringup_and_idle(void); +asmlinkage void cpu_bringup_and_idle(void); + extern void xen_send_IPI_mask(const struct cpumask *mask, int vector); extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask, diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c index a9cf8c8..9ccf975 100644 --- a/arch/x86/xen/smp_pv.c +++ b/arch/x86/xen/smp_pv.c @@ -55,7 +55,6 @@ static DEFINE_PER_CPU(struct xen_common_irq, xen_irq_work) = { .irq = -1 }; static DEFINE_PER_CPU(struct xen_common_irq, xen_pmu_irq) = { .irq = -1 }; static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id); -void asm_cpu_bringup_and_idle(void); static void cpu_bringup(void) { diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 6d7f631..408a2aa 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -146,9 +146,12 @@ int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int), void xen_pin_vcpu(int cpu); void xen_emergency_restart(void); +void xen_force_evtchn_callback(void); + #ifdef CONFIG_XEN_PV void xen_pv_pre_suspend(void); void xen_pv_post_suspend(int suspend_cancelled); +void xen_start_kernel(struct start_info *si); #else static inline void xen_pv_pre_suspend(void) {} static inline void xen_pv_post_suspend(int suspend_cancelled) {} diff --git a/include/xen/xen.h b/include/xen/xen.h index 0efeb65..f989162 100644 --- a/include/xen/xen.h +++ b/include/xen/xen.h @@ -31,6 +31,9 @@ extern uint32_t xen_start_flags; #include extern struct hvm_start_info pvh_start_info; +void xen_prepare_pvh(void); +struct pt_regs; +void xen_pv_evtchn_do_upcall(struct pt_regs *regs); #ifdef CONFIG_XEN_DOM0 #include -- 2.7.4